This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 17 |
| 3 | 179 |
| 4 | 2221 |
| 5 | 27457 |
| 6 | 506683 |
| 7 | 14161729 |
| 8 | 368345293 |
| 9 | 9672485827 |
| 10 | 318083817907 |
| 11 | 12695664159413 |